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use std::any::type_name;
use std::fmt::Debug;
use std::rc::Rc;
use crate::private::any_factory::AnyFactory;
use crate::private::factory::IFactory;
use crate::ptr::TransientPtr;
pub struct CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
DIContainerT: 'static,
{
func: &'static dyn Fn<(Rc<DIContainerT>,), Output = TransientPtr<ReturnInterface>>,
}
impl<ReturnInterface, DIContainerT> CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
{
pub fn new(
func: &'static dyn Fn<
(Rc<DIContainerT>,),
Output = TransientPtr<ReturnInterface>,
>,
) -> Self
{
Self { func }
}
}
impl<ReturnInterface, DIContainerT> IFactory<ReturnInterface, DIContainerT>
for CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
{
}
impl<ReturnInterface, DIContainerT> Fn<(Rc<DIContainerT>,)>
for CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
{
extern "rust-call" fn call(&self, args: (Rc<DIContainerT>,)) -> Self::Output
{
self.func.call(args)
}
}
impl<ReturnInterface, DIContainerT> FnMut<(Rc<DIContainerT>,)>
for CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
{
extern "rust-call" fn call_mut(&mut self, args: (Rc<DIContainerT>,)) -> Self::Output
{
self.call(args)
}
}
impl<ReturnInterface, DIContainerT> FnOnce<(Rc<DIContainerT>,)>
for CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
{
type Output = TransientPtr<ReturnInterface>;
extern "rust-call" fn call_once(self, args: (Rc<DIContainerT>,)) -> Self::Output
{
self.call(args)
}
}
impl<ReturnInterface, DIContainerT> AnyFactory
for CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
DIContainerT: 'static,
{
}
impl<ReturnInterface, DIContainerT> Debug
for CastableFactory<ReturnInterface, DIContainerT>
where
ReturnInterface: 'static + ?Sized,
{
#[cfg(not(tarpaulin_include))]
fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
{
let ret = type_name::<TransientPtr<ReturnInterface>>();
formatter.write_fmt(format_args!("CastableFactory (Rc<DIContainer>) -> {ret}"))
}
}
#[cfg(test)]
mod tests
{
use super::*;
use crate::di_container::blocking::MockDIContainer;
#[derive(Debug, PartialEq, Eq)]
struct Bacon
{
heal_amount: u32,
}
#[test]
fn can_call()
{
let castable_factory =
CastableFactory::new(&|_| TransientPtr::new(Bacon { heal_amount: 27 }));
let mock_di_container = Rc::new(MockDIContainer::new());
let output = castable_factory.call((mock_di_container,));
assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 27 }));
}
#[test]
fn can_call_mut()
{
let mut castable_factory =
CastableFactory::new(&|_| TransientPtr::new(Bacon { heal_amount: 103 }));
let mock_di_container = Rc::new(MockDIContainer::new());
let output = castable_factory.call_mut((mock_di_container,));
assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 103 }));
}
#[test]
fn can_call_once()
{
let castable_factory =
CastableFactory::new(&|_| TransientPtr::new(Bacon { heal_amount: 19 }));
let mock_di_container = Rc::new(MockDIContainer::new());
let output = castable_factory.call_once((mock_di_container,));
assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 19 }));
}
}
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